Info about the AT&T 620 terminal (REALLY AT&T 630MTG)

[Peter C. Dibble]

I looked hard for the "best" large-screen multi-window terminal on the market
early this year.  The 630 MTG was the result.  I bought one and I am pleased 
with it.

Scrolling _is_ a bit slow, but considering that it is scrolling a bitmap
it's not bad.  It's certainly not 19.2 kb.  It looks like something between
4800 and 9600 Baud.  It doesn't look strange while scrolling.  Perhaps that
is unique to the 615?

I use the terminal most with OS-9 where I can only use the two standard
windows.  I wish I could use more of the power of this terminal, but even
trivial things like peeling a window and saving it for reference, or cutting
some text out of a window and sending it to the computer (with the mouse)
are useful enough that I forgive this terminal for its slow scrolling.

Does anyone have an idea where I can get enough information about the
630's operating system to write code for it?  I bought the Software
Development Guide and found nothing in there but fluff about C programming
and utilities.  I don't even know how to _invoke_ the operating system yet!
I imagine that I could learn enough from the source package but I would
rather do this without using secret stuff.  I'd like to be able to
give OS-9 support for the terminal away when I'm done with it.

Peter Dibble
dibble at cs.rochester.edu